[IEEE IECON '98. 24th Annual Conference of the IEEE Industrial Electronics Society - Aachen, Germany (31 Aug.-4 Sept. 1998)] IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200) - Mechanical design of an intelligent lift system for severely disabled persons-development of a patient hoist in connection with the common research project INSERVUM (intelligent service environment)